Validation of the Japanese version of the Bath CRPS Body Perception Disturbance Scale for CRPS
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ORIGINAL ARTICLE
Validation of the Japanese version of the Bath CRPS Body Perception Disturbance Scale for CRPS Akira Mibu1,2 · Tomohiko Nishigami3 · Hironobu Uematsu2,4 · Katsuyoshi Tanaka5 · Masahiko Shibata6 · Yoichi Matsuda2,4 · Yuji Fujino4 Received: 6 August 2020 / Accepted: 29 August 2020 © Japanese Society of Anesthesiologists 2020
Abstract Purpose Body perception disturbance is a common symptom and may be one of the key targets of treatment intervention in complex regional pain syndrome (CRPS). As a comprehensive assessment tool of body perception in patients with CRPS, the Bath Body Perception Disturbance Scale (BPDS) was developed, and its adequate reliability and validity have been reported. However, there is no available Japanese version. Therefore, this study aimed to develop a Japanese version of BPDS (BPDS-J) and to investigate the validity of this scale in Japanese patients with CRPS. Methods We developed BPDS-J using a forward–backward method. We then assessed 22 patients with CRPS type 1 of the upper limb using BPDS-J, Brief Pain Inventory (BPI), Tampa Scale for Kinesiophobia (TSK), and a two-point discrimination threshold (TPD) on the middle finger. We investigated the internal consistency of BPDS-J and the correlation between BPDS-J and clinical outcomes as a concurrent validity measure. Results BPDS-J had good internal consistency (Cronbach’s α = 0.73) and was significantly correlated with the TPD ratio (r = 0.65, adjusted p = 0.01) and TSK (r = 0.51, adjusted p = 0.04). Conclusions BPDS-J has good internal consistency and concurrent validity for assessing body perception disturbance in Japanese patients with CRPS. Disturbed body perception may be worth evaluating when managing patients with CRPS using BPDS. Keywords Body perception disturbance · Complex regional pain syndrome · Validity
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00540-020-02853-0) contains supplementary material, which is available to authorized users. * Akira Mibu a_mibu@konan‑wu.ac.jp 1
Department of Physical Therapy, Faculty of Nursing and Rehabilitation, Konan Women’s University, 6‑2‑23, Morikita‑Machi, Higashinada‑ku, Kobe, Hyogo, Japan
2
Center for Pain Management, Osaka University Hospital, Suita, Japan
3
Department of Physical Therapy, Prefectural University of Hiroshima, Mihara, Japan
4
Department of Anesthesiology and Intensive Care, Osaka University Graduate School of Medicine, Suita, Japan
5
Department of Rehabilitation, Tanabe Orthopaedics, Osaka, Japan
6
Department of Rehabilitation, Nara Gakuen University, Nara, Japan
Complex regional pain syndrome (CRPS) is a complex pain disorder that usually arises after limb trauma [1]. Patients with CRPS suffer from disproportionate pain and a wide variety of symptoms and/or signs, such as sensory (hyperalgesia or allodynia), vasomotor (changes or asymmetry in temperature, changes, or asymmetry in skin color), sudomotor (edema, change or asymmetry in sweating), trophic (thin
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